Product Details
Product Overview
The Allen-Bradley 1761-L16BWB functions as a self-contained, micro-scale controller within the MicroLogix 1000 family. This compact PLC manages discrete automation tasks by integrating 10 DC inputs and 6 relay outputs into a single high-density footprint. Although the manufacturer classifies this series as discontinued, we supply this unit as 100% Brand New original factory stock. It provides a drop-in solution for maintaining existing machine-level control systems without the high engineering costs associated with hardware migration or control program rewrites.
Technical Specifications
| Feature | Specification |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Line | MicroLogix 1000 |
| I/O Count | 16 Points Total |
| Digital Inputs | Ten (10) 24V DC (Sinking or Sourcing) |
| Digital Outputs | Six (6) Relay Contact Outputs |
| Power Supply | 20.4–26.4V DC |
| Memory Type | 1 K EEPROM (737 instruction words) |
| Communication | RS-232 (DF1 Protocol) |
| Power Consumption | 5 Watts |
| Inrush Current | 30A for 4 ms |
| Vibration/Shock | 10 G (Operating) / 20 G (Non-Operating) |
| Weight | 0.50 lbs (0.23 kg) |
Engineering Advantages
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Hybrid Input Versatility: The 1761-L16BWB accepts both sinking and sourcing input configurations. This allows engineers to interface with a wide range of NPN or PNP sensors without adding external pull-up or pull-down resistors, simplifying field wiring in mixed-device environments.
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Rugged Relay Output Switching: Six integrated relay outputs handle various load types, including AC and DC voltages. These dry contacts eliminate the need for interposing relays when switching small solenoid valves or motor starters, reducing total cabinet space and material costs.
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Non-Volatile Logic Security: The 1K EEPROM stores the entire user program and data. This memory technology eliminates the need for backup batteries, ensuring the PLC retains its logic indefinitely during long-term power outages or equipment storage.
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Hardened Industrial Design: Built to withstand 10 G of operating shock, the 1761-L16BWB excels in high-vibration applications such as sorting conveyors, packaging machines, and mobile industrial platforms.
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Deterministic Logic Execution: The dedicated 1761 processor executes instructions with high repeatability. It processes approximately 737 instruction words with consistent scan times, ensuring precise timing for high-speed discrete manufacturing sequences.
FAQs
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What software do I need to program the 1761-L16BWB?
You must use RSLogix 500 or RSLogix Micro software. The controller communicates via the 8-pin mini-DIN RS-232 port using the DF1 protocol.
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Can I replace a 1761-L16BWA with a 1761-L16BWB?
Check your power source first. The "BWA" model requires 120/240V AC power, whereas the "BWB" model requires a 24V DC power supply. While the I/O count remains the same, the power wiring differs significantly.
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Does this unit support I/O expansion modules?
No. The MicroLogix 1000 series features a fixed I/O configuration. If your application requires more than 16 points, you should consider the MicroLogix 1100 or 1200 series, which support 1762 expansion modules.
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How do I know this unit is truly brand new?
We guarantee every 1761-L16BWB arrives in its Original Allen-Bradley Factory Packaging with intact serial numbers and seals. This ensures the 50,000-cycle minimum power cycle rating remains fully available for your application.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
PLC vs. HMI: Distinguishing the Brain from the Interface in Industrial Automation
In the realm of industrial automation, distinguishing between a Programmable Logic Controller (PLC) and a Human-Machine Interface (HMI) is fundamental. While both devices work in tandem, they serve distinct purposes. The PLC acts as the "brain" of the operation, executing logic, whereas the HMI serves as the "eyes," allowing operators to monitor and interact with the system. Understanding this synergy is essential for any professional designing robust factory automation solutions.
Selecting the Right Industrial Automation Solution for Modern Manufacturing
Choosing an effective industrial automation system starts with a thorough process audit. You must identify tasks that are repetitive, labor-intensive, or prone to human error. Not every process requires high-level automation; therefore, prioritize operations that directly impact throughput and quality. By scoping your needs accurately, you avoid over-investing in unnecessary technology. A balanced approach ensures that your capital expenditure aligns with measurable gains in operational efficiency.
Implementing FIFO and LIFO Data Sequencing in PLC Programming
Data management serves as a cornerstone of modern industrial automation. Whether tracking materials on a conveyor or managing batch sequences in a process, engineers frequently rely on sequential logic. Two primary structures—First-In-First-Out (FIFO) and Last-In-First-Out (LIFO)—form the bedrock of this data handling. Mastering these blocks allows programmers to optimize complex machine operations efficiently.